Finding the Fourth Proportional to 85,617.97, 128,432.57 and 22,439.63
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Solution
The fourth proportional to 85,617.97, 128,432.57 and 22,439.63 is: 33,660.92
Step by Step Solution
- Step 1: Write the proportion equation
85,617.97 : 128,432.57 = 22,439.63 : x - Step 2: Convert to fraction form
85,617.97/128,432.57 = 22,439.63/x - Step 3: Cross multiply
85,617.97x = 128,432.57 × 22,439.63 - Step 4: Simplify right side
85,617.97x = 2,881,979,559.63 - Step 5: Solve for x
x = 2,881,979,559.63/85,617.97 - Step 6: Final answer
x = 33,660.92
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.